Carton blank



FIG. 1 is a top plan view of a carton blank embodying my new design, thebottom being substantially a mirror image thereof;

FIG. 2 is a side elevational view of the carton blank shown in FIG. 1;and

FIG. 3 is an end elevational view of the carton blank shown in FIG. 1.

The dash lines represent score lines and fold lines.

The ornamental design for a carton blank, as shown and described.